US9326225B2 - Method of providing communication over a mobile communication network - Google Patents
Method of providing communication over a mobile communication network Download PDFInfo
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- US9326225B2 US9326225B2 US14/343,140 US201214343140A US9326225B2 US 9326225 B2 US9326225 B2 US 9326225B2 US 201214343140 A US201214343140 A US 201214343140A US 9326225 B2 US9326225 B2 US 9326225B2
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004891 communication Methods 0.000 title claims abstract description 26
- 238000010295 mobile communication Methods 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 claims description 2
- JZEPSDIWGBJOEH-UHFFFAOYSA-N 4-decylbicyclo[2.2.1]hept-2-ene Chemical compound C1CC2C=CC1(CCCCCCCCCC)C2 JZEPSDIWGBJOEH-UHFFFAOYSA-N 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0064—Transmission or use of information for re-establishing the radio link of control information between different access points
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/249—Reselection being triggered by specific parameters according to timing information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Definitions
- the present invention relates to the field of communication networks and, more specifically, to a method of providing communication over a communication network comprising two or more fixed nodes and one or more mobile relay nodes.
- the air-interface of the network which is the E-UTRAN part (evolved UMTS Terrestrial Radio Access network) of the LTE network—comprises networks nodes, called eNBs, E-UTRAN NodeBs, operating each a fixed radio cell for serving user equipments, UE, located within the coverage area of the respective radio cell.
- eNBs networks nodes
- E-UTRAN NodeBs operating each a fixed radio cell for serving user equipments, UE, located within the coverage area of the respective radio cell.
- the E-UTRAN supports a relaying by mobile relay nodes wirelessly connected to an eNB serving the mobile relay node, the eNB therefore is called Donor eNB, DeNB, via a modified version of the E-UTRAN radio interface which is called Un interface.
- the mobile relay node For the user equipments served by the mobile radio cell operated by the mobile relay node, the mobile relay node appears as a mobile base station. Therefore the user equipments need to know the physical cell ID assigned to the mobile radio cell operated by the mobile relay node for sending and receiving communication via the mobile relay node over the mobile communication network.
- the objective of the present invention is to improve communication over a mobile communication network.
- the objective of the present invention is achieved by a method of providing communication over a mobile communication network comprising two or more fixed nodes each operating a fixed radio cell for serving one or more user equipments via a first radio interface, wherein each of the fixed radio cells is identified by a physical cell ID, selected out of a set of N physical cell IDs, and one or more mobile relay nodes served by the two or more fixed nodes via a second radio interface, the one or more mobile relay nodes each operating a mobile radio cell for serving one or more user equipments via a third radio interface, wherein each of the mobile radio cells is identified by a physical cell ID selected out of the set of N physical cell IDs, the method comprising the step of dynamically assigning a physical cell ID, preferably the physical cell IDs, of the set of N physical cell IDs to the one or more mobile radio cells.
- the objective of the present invention is further achieved by one or more fixed nodes and one or more mobile relay nodes.
- a fixed node comprises a first communication unit adapted to operate a fixed radio cell for serving one or more user equipments via a first radio interface, the fixed radio cell being identified by a physical cell ID selected out of a set of N physical cell IDs, a second communication unit adapted to serve one or more mobile relay nodes via a second radio interface and a control unit adapted to dynamically assign a physical cell ID of the set of N physical cell IDs to the one or more mobile radio cells.
- a mobile relay node comprises a first communication unit adapted to operate a mobile radio cell for serving one or more user equipments via a third radio interface, a second communication unit adapted to communicate via a second radio interface with one or more fixed nodes each operating a fixed radio cell for serving one or more user equipments via a first radio interface, wherein each of the fixed radio cells is identified by a physical cell ID selected out of the set of N physical cell IDs, and a control unit adapted—on assignment of a physical cell ID of the set of N physical cell IDs as new physical cell ID—to switch from an old physical cell ID to a new physical cell ID.
- the present invention aims to overcome the problem of the restriction of the number of active mobile relay nodes and of the number of mobile radio cells operated by the mobile relay nodes respectively within a mobile communication network as the result of a limited number of available physical cell IDs. This is, as the total number of physical cell IDs in a mobile communication network is restricted, once all available physical cell IDs are assigned, a new mobile radio cell operated by a mobile relay node can not be assigned with a physical cell ID which would uniquely identify the mobile radio cell operated by said mobile relay node within the mobile communication network.
- said mobile radio cell operated by the mobile relay node can not be active in the mobile communication network or in case one of the already assigned physical cell IDs might be assigned to another fixed radio cell operated by a fixed node or to another mobile radio cell operated by a mobile relay node, there will be a confusion and/or collision situation due to the same physical cell ID assigned to two or even more radio cells, fixed radio cells and/or mobile radio cells, in particular the two cells being direct neighbour cells and in the case that a radio cell has two neighbour cells with identical physical cell IDs. Even if the same physical cell ID would be assigned to cells which are not adjacent to each other, but rather being in a quite distance, the confusion and/or collision situation might be attenuated, but still not solved.
- the fixed node can serve a huge number of mobile relay nodes as the fixed node controls the allocation of the physical cell IDs required for mobility of the mobile relay nodes.
- full user equipment mobility can be provided both in the direction from the mobile relay node towards the macro cell, i.e. the radio cell of the fixed node, and from the macro cell towards the mobile relay node.
- the fixed node may be for example a DeNB
- the mobile relay node may be a mobile relay within a car
- user equipment may be a mobile phone, a tablet computer or any device being able to communicate via mobile communication.
- a handover towards the fixed node i.e. the user equipment is leaving the mobile relay node, i.e. a car
- the mobile relay node i.e. a car
- handover towards the mobile relay when user equipment, i.e. a mobile phone, e.g., is leaving the coverage area of the fixed node, i.e. the DeNB, e.g., and is afterwards served by the mobile relay node, i.e. of the car, e.g.
- the method comprises measuring a signal strength of a serving fixed radio cell and a signal strength of surrounding fixed radio cells by a mobile relay node. If the signal strength of a surrounding fixed radio cell exceeds the signal strength of the serving fixed radio cell, a handover request is sent to the serving fixed node by the mobile relay node and a handover acceptance procedure between the serving fixed node and a target fixed node is executed.
- the target fixed node is one of the surrounding fixed nodes, and is selected as the target fixed node, because the signal strength of the radio cell operated by this node exceeds the signal strength of the serving fixed radio cell, the target fixed node therefore is selected as the fixed network node to which the handover is requested to be performed so that the target fixed node becomes the “new” serving fixed node after the handover from the “old” currently serving fixed node has been completed. If the handover is accepted, a new physical cell ID of the set of N physical cell IDs is selected and the selected new physical cell ID is assigned to a mobile radio cell operated by the mobile relay node.
- the step of assigning the selected physical cell ID to the mobile radio cell comprises the steps of transmitting the new physical cell ID from the serving fixed node or the target fixed node to the mobile relay node and switching from an old physical cell ID to the new physical cell ID by using the new physical cell ID by the mobile relay node to identify the mobile radio cell operated by said mobile relay node.
- the new physical cell ID of the mobile radio cell operated by the mobile relay node is transmitted from the target fixed node by means of an X2 message to the mobile relay node via a Un interface of the second radio interface.
- the Un interface is a modified version of the E-UTRAN radio interface connecting a fixed node with a mobile relay node, whereby X2 messages are used for connecting network nodes in an E-UTRAN communication network.
- the physical cell ID is switched from an old physical cell ID to the new physical cell ID by using the new physical cell ID by the mobile relay node to identify the mobile radio cell operated by said mobile relay node.
- the user equipment detects that the mobile radio cell identified by the new physical cell ID is the strongest radio cell, then the user equipment sends a handover request to the mobile relay node operating said mobile radio cell identified by the new physical cell ID, and a handover procedure to the mobile radio cell identified by the new physical cell ID is executed.
- the physical cell ID is switched from an old physical cell ID to the new physical cell ID by using the new physical cell ID by the mobile relay node to identify the mobile radio cell operated by said mobile relay node.
- the user equipment which has been served by the mobile radio cell identified by the old physical cell ID detects that the old physical cell ID is not longer transmitted whereby the user equipment suffers a radio link failure.
- a RRC connection re-establishment request radio resource control connection re-establishment request, of the user equipment is sent from the user equipment to the mobile relay node.
- the RRC connection re-establishment request includes the old physical cell ID.
- a RRC connection re-establishment message radio resource control connection re-establishment message
- the physical cell ID is switched from an old physical cell ID to the new physical cell ID by using the new physical cell ID by the mobile relay node to identify the mobile radio cell operated by said mobile relay node.
- a RRC connection reconfiguration message radio resource control connection reconfiguration message, is sent to all active user equipments served by the mobile radio cell identified by the old physical cell ID.
- the RRC connection reconfiguration message forces the user equipments to connect to the mobile radio cell identified by the new physical cell ID. This message can be sent out independently of a previous measurement report of user equipment.
- the RRC connection reconfiguration message is sent before the physical cell ID is switched from the old physical cell ID to the new physical cell ID, and a handover timer of the user equipment is triggered based on the reception of said RRC connection reconfiguration message.
- the user equipment is connected to the mobile radio cell identified by the new physical cell ID as soon as the handover timer expires or as long as the handover timer is still running.
- the physical cell ID is switched at a specific time stamp from an old physical cell ID to the new physical cell ID by using the new physical cell ID by the mobile relay node to identify the mobile radio cell operated by said mobile relay node.
- a broadcast message comprising the new physical cell ID and the time stamp is transmitted towards the user equipment served by the mobile radio cell identified by the old physical cell ID.
- a fixed node of the two or more fixed nodes provides an internal list, which stores information about a physical cell ID of the set of N physical cell IDs currently assigned to a fixed radio cell operated by the fixed node and information about a physical cell ID of the set of N physical cell IDs currently assigned to a surrounding fixed radio cell operated by a surrounding fixed node and/or information about a physical cell ID of the set of N physical cell IDs currently assigned to a mobile radio cell operated by a mobile relay node, in particular a mobile relay node served by the fixed node. Then one of the physical cell IDs of the set of N physical cell IDs is selected by the fixed node, which according to the internal list is not yet currently assigned. Also a physical cell ID may be selected as new physical cell ID, if said physical cell ID previously assigned to another fixed radio cell or mobile radio cell, is now not used any more and has therefore been released.
- the fixed node receives from a surrounding fixed node information about a physical cell ID of the set of N physical cell IDs currently assigned to a surrounding fixed radio cell operated by the surrounding fixed node and/or information about a physical cell ID of the set of N physical cell IDs currently assigned to a surrounding mobile radio cell operated by a surrounding mobile relay node served by the surrounding fixed node. Then the internal list is updated by means of the received information.
- said fixed node is the target fixed node or the serving fixed node.
- the mobile relay node stores information about the physical cell IDs of the surrounding fixed and/or mobile radio cells and sends the information to the fixed node, wherein said fixed node may be the serving fixed node or the target fixed node, for update of the internal list by means of the received information.
- FIG. 1 depicts an overall view of the structure of a mobile communication network
- FIG. 2 is a block diagram showing a physical cell ID assignment in a mobile communication network before a handover is provided;
- FIG. 3 is a block diagram showing a physical cell ID assignment in a mobile communication network after a handover is provided.
- FIG. 4 is a flow diagram showing the communication procedure for physical cell ID assignment and handover within a communication network
- FIG. 1 shows a mobile communication network 1 comprising the air-interface part 1 a of the network and other network nodes 1 b which are in particular access nodes of the network.
- the air-interface part comprises fixed nodes 2 a , 2 b and one or more mobile relay nodes 7 of which only one is depicted in FIG. 1 .
- FIG. 1 shows user equipments 4 served by the network nodes 2 a , 2 b and 7 .
- the user equipments 4 may be mobile phones, laptop computers or other devices able to communicate by mobile communication.
- the mobile communication network 1 is a LTE network of which the air-interface part of the network 1 a is implemented with E-UTRAN network components.
- the fixed nodes 2 a , 2 b of the E-UTRAN part 1 a of the network 1 are E-UTRAN nodeBs, eNBs, wherein an eNB which is serving a mobile relay node 7 is called Donor eNB, DeNB.
- mobile relay nodes 7 may be a mobile relay within a car, a train or a bus.
- the network nodes 1 b may be mobile management entities, MME, and/or serving gateways, S-GW.
- MME mobile management entities
- S-GW serving gateways
- each fixed node 2 a , 2 b operates a fixed radio cell 3 a , 3 b for serving one or more user equipments 4 via a first radio interface 5 a , 5 b and for serving one or more of the mobile relay nodes 7 via a second radio interface 8 a , 8 b .
- the mobile relay nodes 7 operate each a mobile radio cell 9 for serving one or more user equipments 4 via a third radio interface 10 .
- FIG. 1 only one mobile relay node 7 is depicted.
- a physical cell ID 6 a , 6 b , 6 c . . . 6 N
- the physical cell ID 6 a is assigned to the fixed radio cell 3 a and identifies the fixed radio cell 3 a operated by the fixed node 2 a
- the physical cell ID 6 b is assigned to the fixed radio cell 3 b and identifies the fixed radio cell 3 b operated by fixed node 2 b
- the physical cell ID 6 c is assigned to the mobile radio cell 9 and identifies the mobile radio cell 9 operated by the mobile relay node 7 .
- Each physical cell ID is selected out of a set of N physical cell IDs ( 6 a , 6 b , 6 c . . . 6 N). The number of physical cell IDs available in the mobile communication network is restricted.
- the number N of the physical cell IDs is restricted to 504 . Therefore, an assignment of a predefined physical cell ID for each mobile radio cell which is persistent for a longer time during the movement of the mobile relay node operating said mobile radio cell is not possible as more mobile radio cells operated by the mobile relay nodes than the available number of physical cell IDs, e.g. for the LTE network 504 , should be served which would not be possible, if a physical cell ID was assigned once for ever and could therefore not be re-used after release of the mobile radio cell operated by the mobile relay node.
- a mobile relay node can be for example a mobile relay within a car, so that the mobile relay node is changing the local position of the mobile radio cell operated by said mobile relay node as the car is changing its local position.
- neighbour cells of a source cell should not have the same physical cell ID; otherwise a handover might fail as the wrong target cell might be addressed by the source cell.
- the assignment of a physical cell ID out of the set of N physical cell IDs is therefore made dynamically.
- This means a physical cell ID is not assigned to a mobile radio cell once for ever, but the assignment is made in a way that the N available physical cell IDs are used, released and re-used in a way to achieve the usage of the physical cell IDs in an effective way taken in consideration which physical cell IDs are currently used, i.e. still used or not used anymore so as the respective physical cell IDs can be released and re-used when needed.
- a confusion or collision due to same physical cell IDs assigned to radio cells being neighbour cells or adjacent cells should be avoided accordingly.
- This dynamic assignment of a physical cell ID is a new task of the fixed node serving the mobile relay node, e.g. in case of the exemplary LTE network, the DeNB serving the mobile relay node, which has not yet been described by 3GPP.
- a mobile relay node 7 measures the signal strength of a serving fixed radio cell 3 a and the signal strength of surrounding fixed radio cells, for example of the surrounding fixed radio cell 3 b . If the signal strength of one of the surrounding fixed radio cells, for example the signal strength of the fixed radio cell 3 b , exceeds the signal strength of the fixed radio cell 3 a , the mobile relay node 7 sends a handover request 11 ( FIG. 4 ) to the serving fixed node 2 a . The serving fixed node 2 a executes a handover acceptance procedure 12 ( FIG.
- the fixed node 2 b is therefore defined as the target fixed node 2 b , i.e. the fixed node to which a handover is intended to be performed. If by the target fixed node 2 b the handover request is accepted 12 ( FIG. 4 ), the handover 13 ( FIGS. 2, 3 ) is performed from the serving fixed node 2 a to the target fixed node 2 b by selecting a new physical cell ID 6 d ( FIG. 3 ) of the set of N physical cell IDs and assigning 14 ( FIGS. 3, 4 ) the selected physical cell ID 6 d to the mobile radio cell 9 b operated by the mobile relay node 7 , whereby the new physical cell ID 6 d replaces the old physical cell ID 6 c ( FIG. 2, 3 ).
- the serving fixed node 2 a is a DeNB
- the target fixed node 2 b is also a DeNB of a LTE communication network
- the mobile relay node 7 is a mobile relay within a car, a train or a bus, e.g.
- FIG. 3 shows the situation after the handover procedure 13 has been effected.
- the new physical cell ID 6 d is assigned to the mobile radio cell 9 b operated by the mobile relay node 7 .
- the mobile relay node 7 operated the mobile radio cell 9 a ( FIG. 2 ) for serving the user equipments 4 .
- the mobile relay node 7 operates the mobile radio cell 9 b for serving the user equipments 4 ( FIG. 3 ).
- the selected physical cell ID 6 d is assigned to the mobile radio cell 9 b operated by the mobile relay node 7 by transmitting the new physical cell ID 6 d from the “old” serving fixed node 2 a or from the “new” target fixed node 2 b to the mobile relay node 7 and by switching from an old physical cell ID 6 c to the new physical cell ID 6 d by using the new physical cell ID 6 d by the mobile relay node 7 to identify the mobile radio cell 9 b operated by the mobile relay node 7 ( FIGS. 3, 4 ).
- FIG. 3 shows for exemplary reasons the embodiment of the assignment 14 of the new physical cell ID 6 d to the mobile radio cell 9 b operated by the mobile relay node 7 by, i.e. from, the target fixed node 2 b.
- the target fixed node 2 b transmits the new physical cell ID 6 d of the mobile radio cell 9 b operated by the mobile relay node 7 by means of a X2 message to the mobile relay node 7 via a Un interface of the second radio interface 8 b ( FIG. 3 ).
- the Un interface is a modified version of the E-UTRAN radio interface of a LTE communication network.
- the mobile relay node 7 switches immediately from an old physical cell ID 6 c to the new physical cell ID 6 d by using the new physical cell ID 6 d to identify the mobile radio cell 9 b which is operated by the mobile relay node 7 .
- the user equipment 4 detects that the mobile radio cell 9 b which is identified by the new physical cell ID 6 d is the strongest radio cell and sends out a handover request 15 ( FIG. 4 ) to the mobile relay node 7 operating the mobile radio cell 9 b identified by the new physical cell ID 6 d .
- the new physical cell ID 6 d has to be transmitted to the user equipments 4 so that they can connect to the “new” mobile radio cell 9 b identified by the new physical cell ID 6 d . Therefore following the handover request 15 of the user equipments 4 , a handover procedure 13 is executed to the mobile radio cell 9 b identified by the new physical cell ID 6 d so that the communication from the user equipments 4 via the mobile relay node 7 operating the mobile radio cell 9 b and further to and over the communication network 1 can be provided.
- the user equipment 4 detects that the old physical cell ID 6 c is not longer transmitted, whereby the user equipment 4 suffers a radio link failure.
- a RRC connection re-establishment request 16 a of the user equipment 4 which has been served by the mobile radio cell 9 a identified by the old physical cell ID 6 c is sent from said user equipment 4 to the mobile relay node 7 via the third radio interface 10 ( FIGS. 3, 4 ).
- the RRC connection re-establishment request 16 a includes the old physical cell ID 6 c .
- the communication can be resumed, i.e. there will be no call drop. Accordingly, a RRC connection re-establishment message 16 b is sent from the mobile relay node 7 to the user equipment 4 via the third radio interface 10 ( FIGS. 3, 4 ).
- the mobile relay node 7 after the mobile relay node 7 has switched from the old physical cell ID 6 c to the new physical cell ID 6 d by using the new physical cell ID 6 d to identify the mobile radio cell 9 b operated by the mobile relay node 7 , the mobile relay node 7 sends a RRC connection reconfiguration message 17 to all active user equipments 4 served by the mobile radio cell 9 a identified by the old physical cell ID 6 c , i.e. served by the mobile relay node 7 while operating the mobile radio cell 9 a identified by the old physical cell ID 6 c via the third radio interface 10 ( FIGS. 3, 4 ).
- the RRC connection reconfiguration message 17 forces the user equipments 4 to connect to the mobile radio cell 9 b identified by the new physical cell ID 6 d.
- the RRC connection reconfiguration message 17 is sent to the user equipments 4 before the physical cell ID is switched from the old physical cell ID 6 c to the new physical cell ID 6 d and a handover timer of the user equipment 4 is triggered based on the reception of the RRC connection reconfiguration message 17 .
- the user equipment 4 is connected to the mobile radio cell 9 b identified by the new physical cell ID 6 d as soon as the handover timer expires or as long as the handover timer is still running.
- the mobile relay node 7 switches at a specific time stamp from the old physical cell ID 6 c to the new physical cell ID 6 d by using the new physical cell ID 6 d to identify the mobile radio cell 9 b operated by said mobile relay node 7 .
- the mobile relay node 7 transmits a broadcast message 18 comprising the new physical cell ID 6 d and the time stamp towards the user equipment 4 served by the mobile radio cell 9 a identified by the old physical cell ID 6 c via the third radio interface 10 ( FIGS. 3, 4 ).
- the specific time stamp the physical cell ID changes and the user equipment 4 uses the new physical cell ID 6 d instead of the old physical cell ID 6 c , in particular for being served by the mobile relay node 7 .
- a fixed node 2 a of the two or more fixed nodes provides an internal list which stores information about a physical cell ID 6 a of the set of N physical cell IDs currently assigned to a fixed radio cell 3 a operated by the fixed node 2 a and information about a physical cell ID 6 b of the set of N physical cell IDs currently assigned to a surrounding fixed radio cell 3 b operated by a surrounding fixed node 2 b , and/or information about a physical cell ID 6 c of the set of N physical cell IDs currently assigned to a mobile radio cell 9 operated by a mobile relay node 7 , in particular a mobile relay node 7 served by the fixed node 2 a .
- the fixed node 2 a selects a physical cell ID of the set of N physical cell IDs which according to the internal list is not yet currently assigned.
- the fixed node 2 a receives from a surrounding fixed node 2 b information about a physical cell ID 6 b of the set of N physical cell IDs currently assigned to a surrounding fixed radio cell 3 b operated by the surrounding fixed node 2 b and/or information about a physical cell ID 6 c of the set of N physical cell IDs currently assigned to a surrounding mobile radio cell 9 operated by a surrounding mobile relay node 7 served by the surrounding fixed node 2 b , and updates the internal list by means of the received information.
- the mobile relay node 7 stores information about physical cell IDs of the surrounding fixed and/or mobile radio cells and sends said information to the serving fixed node and/or the target fixed node for update of the internal list by means of the received information.
- the serving fixed node will add the selected physical cell ID to its internal list, also the mobile relay node will update its internal list with the physical cell ID of the serving fixed radio cell.
- a handover request from the mobile relay node towards the radio cell operated by the serving fixed node and vice versa is possible from now on, i.e. the standard handover messages via the X2 interface can be exchanged.
- the serving fixed node will send the complete list of all physical cell IDs related to its fixed neighbours to enable as well a handover towards other fixed neighbours, e.g. the mobile relay node is located at a cell border towards a second radio cell or a radio cell of a second serving fixed node and the received signal is stronger than the signal of the radio cell operated by the serving fixed node.
- the serving fixed node sends the complete list of all physical cell IDs related to mobile radio cells operated by mobile relay nodes to enable as well a handover between the mobile relay nodes. Update of the list, after a handover towards other radio cell, might also be possible.
- the mobile communication network is a LTE communication network
- the two or more serving fixed nodes are DeNBs
- the mobile relay node is a mobile relay within a car, a bus or a train.
Abstract
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PCT/EP2012/064672 WO2013034363A1 (en) | 2011-09-06 | 2012-07-26 | Method of providing communication over a mobile communication network |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11218921B2 (en) * | 2019-08-20 | 2022-01-04 | Qualcomm Incorporated | Centralized PCI management for IAB network |
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EP2951936A1 (en) * | 2013-01-30 | 2015-12-09 | Telefonaktiebolaget L M Ericsson (publ) | Relay device and associated vehicle and method |
CN105657836B (en) * | 2014-11-14 | 2021-09-14 | 索尼公司 | Apparatus and method for physical cell identity allocation of mobile base station |
CN109874153A (en) * | 2017-12-01 | 2019-06-11 | 华为技术有限公司 | A kind of transmission method and relay node |
US10805822B2 (en) * | 2018-05-18 | 2020-10-13 | Lg Electronics Inc. | Method and apparatus for supporting measurement reporting enhancement for aerial device in wireless communication system |
CN111586806A (en) * | 2020-04-24 | 2020-08-25 | 深圳市塔洛思技术有限公司 | Wireless roaming method and device under high-speed environment |
JP7453479B2 (en) | 2021-07-09 | 2024-03-19 | 京セラ株式会社 | Communication control method |
WO2024079020A1 (en) * | 2022-10-10 | 2024-04-18 | Sony Group Corporation | Mobility management via iab nodes in inactive mode |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090129291A1 (en) | 2007-11-19 | 2009-05-21 | Qualcomm Incorporated | Configuring an identifier for an access point |
US20100020710A1 (en) | 2008-07-25 | 2010-01-28 | Qualcomm Incorporated | Cell identifier assignment and selection |
US20100046433A1 (en) * | 2007-01-17 | 2010-02-25 | Ntt Docomo, Inc. | Logical interface establishing method, radio base station, and communication management apparatus |
US20100103845A1 (en) | 2008-10-24 | 2010-04-29 | Qualcomm Incorporated | Cell relay mobility procedures |
US20100309861A1 (en) * | 2009-06-04 | 2010-12-09 | Qualcomm Incorporated | Interference mitigation for downlink in a wireless communication system |
WO2011023234A1 (en) | 2009-08-27 | 2011-03-03 | Nokia Siemens Networks Oy | Method and apparatus for operation of a communication network |
US20110059744A1 (en) * | 2009-09-10 | 2011-03-10 | Samsung Electronics Co., Ltd. | Method and apparatus for allocating cell ID in self-organizing network |
US20110105184A1 (en) * | 2008-04-25 | 2011-05-05 | Olli Juhani Piirainen | Dynamic cell configuration employing distributed antenna system for advaced cellular networks |
US20110143743A1 (en) * | 2008-04-16 | 2011-06-16 | Olaf Pollakowski | Managing a Network Element |
US20120015649A1 (en) * | 2009-12-21 | 2012-01-19 | Samsung Electronics Co., Ltd. | Methods and apparatus to support base station detection and selection in multi-tier wireless networks |
US20130040683A1 (en) * | 2011-08-12 | 2013-02-14 | Telefonaktiebolaget L M Ericsson (Publ) | Systems and Methods For Determining a Coupling Characteristic in a Radio Communications Network |
US20140003327A1 (en) * | 2011-03-28 | 2014-01-02 | Lg Electronics Inc. | Method and apparatus for handing over mobile cell |
US20140133456A1 (en) * | 2012-09-25 | 2014-05-15 | Parallel Wireless, Inc. | Dynamic Multi-Access Wireless Network Virtualization |
US20140192781A1 (en) * | 2011-08-16 | 2014-07-10 | Telefonaktiebolaget L M Ericsson (pulb) | Mobility State Aware Mobile Relay Operation |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011035783A (en) * | 2009-08-04 | 2011-02-17 | Sharp Corp | Relay device, and wireless communication system |
US8611333B2 (en) * | 2009-08-12 | 2013-12-17 | Qualcomm Incorporated | Systems and methods of mobile relay mobility in asynchronous networks |
JP4838377B2 (en) * | 2009-12-14 | 2011-12-14 | 株式会社エヌ・ティ・ティ・ドコモ | Mobile communication system and radio base station |
JP5562663B2 (en) * | 2010-01-26 | 2014-07-30 | 京セラ株式会社 | Radio relay station and control method |
-
2011
- 2011-09-06 EP EP11290397.6A patent/EP2568749B1/en not_active Not-in-force
-
2012
- 2012-07-26 WO PCT/EP2012/064672 patent/WO2013034363A1/en active Application Filing
- 2012-07-26 JP JP2014528914A patent/JP5859127B2/en not_active Expired - Fee Related
- 2012-07-26 CN CN201280043387.8A patent/CN103797859B/en active Active
- 2012-07-26 KR KR1020147004491A patent/KR101547883B1/en not_active IP Right Cessation
- 2012-07-26 US US14/343,140 patent/US9326225B2/en active Active
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100046433A1 (en) * | 2007-01-17 | 2010-02-25 | Ntt Docomo, Inc. | Logical interface establishing method, radio base station, and communication management apparatus |
US20090129291A1 (en) | 2007-11-19 | 2009-05-21 | Qualcomm Incorporated | Configuring an identifier for an access point |
US20110143743A1 (en) * | 2008-04-16 | 2011-06-16 | Olaf Pollakowski | Managing a Network Element |
US20110105184A1 (en) * | 2008-04-25 | 2011-05-05 | Olli Juhani Piirainen | Dynamic cell configuration employing distributed antenna system for advaced cellular networks |
US20100020710A1 (en) | 2008-07-25 | 2010-01-28 | Qualcomm Incorporated | Cell identifier assignment and selection |
US20100103845A1 (en) | 2008-10-24 | 2010-04-29 | Qualcomm Incorporated | Cell relay mobility procedures |
US20100309861A1 (en) * | 2009-06-04 | 2010-12-09 | Qualcomm Incorporated | Interference mitigation for downlink in a wireless communication system |
WO2011023234A1 (en) | 2009-08-27 | 2011-03-03 | Nokia Siemens Networks Oy | Method and apparatus for operation of a communication network |
US20110059744A1 (en) * | 2009-09-10 | 2011-03-10 | Samsung Electronics Co., Ltd. | Method and apparatus for allocating cell ID in self-organizing network |
US20120015649A1 (en) * | 2009-12-21 | 2012-01-19 | Samsung Electronics Co., Ltd. | Methods and apparatus to support base station detection and selection in multi-tier wireless networks |
US20140003327A1 (en) * | 2011-03-28 | 2014-01-02 | Lg Electronics Inc. | Method and apparatus for handing over mobile cell |
US20130040683A1 (en) * | 2011-08-12 | 2013-02-14 | Telefonaktiebolaget L M Ericsson (Publ) | Systems and Methods For Determining a Coupling Characteristic in a Radio Communications Network |
US20140192781A1 (en) * | 2011-08-16 | 2014-07-10 | Telefonaktiebolaget L M Ericsson (pulb) | Mobility State Aware Mobile Relay Operation |
US20140133456A1 (en) * | 2012-09-25 | 2014-05-15 | Parallel Wireless, Inc. | Dynamic Multi-Access Wireless Network Virtualization |
Non-Patent Citations (2)
Title |
---|
Ericsson, "Neighbour Relations and X2 Self-configuration for Relay Nodes," 3rd Generation Partnership Project (3GPP), 3GPP TSG-RAN WG3 #69, R3-102200, pp. 1-6, XP050453076, Madrid, Spain, Aug. 23-27, 2010. |
International Search Report for PCT/EP2012/064672 dated Aug. 31, 2012. |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11218921B2 (en) * | 2019-08-20 | 2022-01-04 | Qualcomm Incorporated | Centralized PCI management for IAB network |
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JP5859127B2 (en) | 2016-02-10 |
JP2014525721A (en) | 2014-09-29 |
EP2568749B1 (en) | 2018-01-31 |
KR20140050677A (en) | 2014-04-29 |
KR101547883B1 (en) | 2015-08-27 |
CN103797859B (en) | 2017-08-25 |
WO2013034363A1 (en) | 2013-03-14 |
US20140211688A1 (en) | 2014-07-31 |
EP2568749A1 (en) | 2013-03-13 |
CN103797859A (en) | 2014-05-14 |
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